The Keyston manual that came with my Impact 303 states that for 1/2" studs 110-120 ft. lbs. of torque. 9/16" studs...140-150 ft. lbs. This is also suppose to be done in three steps....all the way around the wheel at a lower torque (I forget the numbers), then around the wheel again at a higher torque setting, then the final torque that is listed above. It also states to use their numbers and disregard the numbers from Dexter or Lippert if that are different from the Keystone numbers.
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